Senior Full-Stack Dev - AI Risk & Payments (Remote)

Software Mind; Województwo mazowieckie; Remote; PLN 220,000 - 320,000; Full time

Benefits offered by this job

Flexible remote cooperation options

International projects with leading全球

Travel opportunities related to intl.,

Non-corporate atmosphere

Language classes access

Knowledge-sharing initiatives access

Private healthcare and life insurance

Multisport card

Job summary

Software Mind is seeking an experienced software engineer to own and evolve C#/.NET services and REST APIs for a high-volume risk analysis platform. You will design OpenAPI contracts, manage API versioning, and ensure backward compatibility while handling PCI DSS constraints.

You will also contribute to a React/TypeScript frontend and maintain Docker/Kubernetes-based deployments in AKS, supported by Azure DevOps CI/CD.

Qualifications

• 7+ years of commercial software development, with 5+ years in C#/.NET (ASP.NET Core, DI, EF Core or Dapper)
• Strong API design including REST, OpenAPI contracts, versioning and non-breaking changes
• Relational DB and distributed-systems experience: schema, tuning, idempotency, failover handling
• Proficiency in React and TypeScript; able to build features end-to-end and review frontend code
• Daily use of AI coding tools (Claude Code, Copilot, etc.) and shipping AI-accelerated code in production
• Containers: Docker (multi-stage, hardening) and Kubernetes (AKS preferable)
• Testing: xUnit/NUnit, integration tests with real dependencies and contract testing
• Version control and CI/CD (Azure DevOps, GitHub Actions) and autonomy in an existing codebase
• Experience in payments, card processing, risk/fraud or PCI-scoped systems is a plus
• Experience with Microsoft Fabric, Delta Lake or APIs over analytical data stores is a plus

Responsibilities

• Design, build and ship production C#/.NET services and REST APIs for high-volume payments and risk data
• Own API contracts with front end: OpenAPI, versioning, backward-compatibility
• Implement efficient data access against relational and analytics stores at analyst scale
• Ensure security: authentication, authorization, audit logging, PCI-safe handling of tokenized data
• Contribute to React/TypeScript frontend: end-to-end feature delivery and code reviews
• Use AI coding tools as primary accelerator, with unit/integration/contract tests for quality
• Maintain Dockerfiles and Compose; support deployments to AKS; contribute to Azure DevOps CI/CD
• Align work with client architecture group, raise risks early, hand off to internal team

Skills

C#/.NET development

API design

OpenAPI contracts

REST APIs

React/TypeScript

Docker

Kubernetes

Azure DevOps

PCI DSS

AI-assisted coding tools

Tools

Docker

Kubernetes

Azure DevOps

OpenAPI

Job description

Software Mind is seeking an experienced software engineer to own and evolve C#/.NET services and REST APIs for a high-volume risk analysis platform. You will design OpenAPI contracts, manage API versioning, and ensure backward compatibility while handling PCI DSS constraints.

You will also contribute to a React/TypeScript frontend and maintain Docker/Kubernetes-based deployments in AKS, supported by Azure DevOps CI/CD.